Effects on Antenna Polarization on RSSI Based Location Identification

Mark Barralet, Xu Huang, Dharmendra Sharma

    Research output: A Conference proceeding or a Chapter in BookConference contribution

    19 Citations (Scopus)

    Abstract

    Real-time position localization of moving objects in an indoor environment is an encouraging technology for realizing the vision of creating numerous novel location-aware services and applications in various market segments. Increasing the accuracy of these location tracking systems will increase their usefulness. An off the shelf development platform that uses radio signal strength indication (RSSI) based location tracking technique is studied. In this paper we investigate the affects of polarization on the accuracy of an indoor location tracking system. The accuracy of the location calculation is mainly dependent on accuracy of the range measurements. We present an approach to increase system accuracy based on this investigation. We established a model for determining range from RSSI and showed that the model fits our own experimental data. The model includes parameters used to account of environmental effects and we use the least squares method of determining the parameter values. Antenna polarization angle will affect RSSI and thus range accuracy. We empirically show that the model is still valid for polarization mismatch but with different environmental parameter values. We then analyze the affects that these parameters and polarization have on our location system. A method based on semi-automated trail and error is proposed as a better method for selecting the environmental parameters. Using experimental data we show that if we adjust the model parameters to account for polarization angle then we can increase location accuracy. Adjusting parameters for polarization is fairly trivial to implement when the polarization angle is known. A practical solution for determining the polarization angle is with an accelerometer. The addition of an accelerometer could also be used to increase the battery life of the node
    Original languageEnglish
    Title of host publicationThe 11th International Conference on Advanced Communication Technology
    Subtitle of host publicationUbiquitous ICT Convergence Makes Life Better!
    EditorsHyeong-Ho Lee
    Place of PublicationKorea
    PublisherIEEE, Institute of Electrical and Electronics Engineers
    Pages260-265
    Number of pages6
    Volume3
    ISBN (Print)9788955191387
    Publication statusPublished - 2009
    Event11th IEEE International Conference on Advanced Communication Technology - Phoenix Park, Korea, Democratic People's Republic of
    Duration: 15 Feb 200918 Feb 2009

    Conference

    Conference11th IEEE International Conference on Advanced Communication Technology
    CountryKorea, Democratic People's Republic of
    CityPhoenix Park
    Period15/02/0918/02/09

    Fingerprint

    Polarization
    Antennas
    Accelerometers
    Environmental impact

    Cite this

    Barralet, M., Huang, X., & Sharma, D. (2009). Effects on Antenna Polarization on RSSI Based Location Identification. In H-H. Lee (Ed.), The 11th International Conference on Advanced Communication Technology: Ubiquitous ICT Convergence Makes Life Better! (Vol. 3, pp. 260-265). Korea: IEEE, Institute of Electrical and Electronics Engineers.
    Barralet, Mark ; Huang, Xu ; Sharma, Dharmendra. / Effects on Antenna Polarization on RSSI Based Location Identification. The 11th International Conference on Advanced Communication Technology: Ubiquitous ICT Convergence Makes Life Better!. editor / Hyeong-Ho Lee. Vol. 3 Korea : IEEE, Institute of Electrical and Electronics Engineers, 2009. pp. 260-265
    @inproceedings{ebb49db76558497c864d3336e8811a6f,
    title = "Effects on Antenna Polarization on RSSI Based Location Identification",
    abstract = "Real-time position localization of moving objects in an indoor environment is an encouraging technology for realizing the vision of creating numerous novel location-aware services and applications in various market segments. Increasing the accuracy of these location tracking systems will increase their usefulness. An off the shelf development platform that uses radio signal strength indication (RSSI) based location tracking technique is studied. In this paper we investigate the affects of polarization on the accuracy of an indoor location tracking system. The accuracy of the location calculation is mainly dependent on accuracy of the range measurements. We present an approach to increase system accuracy based on this investigation. We established a model for determining range from RSSI and showed that the model fits our own experimental data. The model includes parameters used to account of environmental effects and we use the least squares method of determining the parameter values. Antenna polarization angle will affect RSSI and thus range accuracy. We empirically show that the model is still valid for polarization mismatch but with different environmental parameter values. We then analyze the affects that these parameters and polarization have on our location system. A method based on semi-automated trail and error is proposed as a better method for selecting the environmental parameters. Using experimental data we show that if we adjust the model parameters to account for polarization angle then we can increase location accuracy. Adjusting parameters for polarization is fairly trivial to implement when the polarization angle is known. A practical solution for determining the polarization angle is with an accelerometer. The addition of an accelerometer could also be used to increase the battery life of the node",
    author = "Mark Barralet and Xu Huang and Dharmendra Sharma",
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    pages = "260--265",
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    Barralet, M, Huang, X & Sharma, D 2009, Effects on Antenna Polarization on RSSI Based Location Identification. in H-H Lee (ed.), The 11th International Conference on Advanced Communication Technology: Ubiquitous ICT Convergence Makes Life Better!. vol. 3, IEEE, Institute of Electrical and Electronics Engineers, Korea, pp. 260-265, 11th IEEE International Conference on Advanced Communication Technology, Phoenix Park, Korea, Democratic People's Republic of, 15/02/09.

    Effects on Antenna Polarization on RSSI Based Location Identification. / Barralet, Mark ; Huang, Xu; Sharma, Dharmendra.

    The 11th International Conference on Advanced Communication Technology: Ubiquitous ICT Convergence Makes Life Better!. ed. / Hyeong-Ho Lee. Vol. 3 Korea : IEEE, Institute of Electrical and Electronics Engineers, 2009. p. 260-265.

    Research output: A Conference proceeding or a Chapter in BookConference contribution

    TY - GEN

    T1 - Effects on Antenna Polarization on RSSI Based Location Identification

    AU - Barralet, Mark

    AU - Huang, Xu

    AU - Sharma, Dharmendra

    PY - 2009

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    N2 - Real-time position localization of moving objects in an indoor environment is an encouraging technology for realizing the vision of creating numerous novel location-aware services and applications in various market segments. Increasing the accuracy of these location tracking systems will increase their usefulness. An off the shelf development platform that uses radio signal strength indication (RSSI) based location tracking technique is studied. In this paper we investigate the affects of polarization on the accuracy of an indoor location tracking system. The accuracy of the location calculation is mainly dependent on accuracy of the range measurements. We present an approach to increase system accuracy based on this investigation. We established a model for determining range from RSSI and showed that the model fits our own experimental data. The model includes parameters used to account of environmental effects and we use the least squares method of determining the parameter values. Antenna polarization angle will affect RSSI and thus range accuracy. We empirically show that the model is still valid for polarization mismatch but with different environmental parameter values. We then analyze the affects that these parameters and polarization have on our location system. A method based on semi-automated trail and error is proposed as a better method for selecting the environmental parameters. Using experimental data we show that if we adjust the model parameters to account for polarization angle then we can increase location accuracy. Adjusting parameters for polarization is fairly trivial to implement when the polarization angle is known. A practical solution for determining the polarization angle is with an accelerometer. The addition of an accelerometer could also be used to increase the battery life of the node

    AB - Real-time position localization of moving objects in an indoor environment is an encouraging technology for realizing the vision of creating numerous novel location-aware services and applications in various market segments. Increasing the accuracy of these location tracking systems will increase their usefulness. An off the shelf development platform that uses radio signal strength indication (RSSI) based location tracking technique is studied. In this paper we investigate the affects of polarization on the accuracy of an indoor location tracking system. The accuracy of the location calculation is mainly dependent on accuracy of the range measurements. We present an approach to increase system accuracy based on this investigation. We established a model for determining range from RSSI and showed that the model fits our own experimental data. The model includes parameters used to account of environmental effects and we use the least squares method of determining the parameter values. Antenna polarization angle will affect RSSI and thus range accuracy. We empirically show that the model is still valid for polarization mismatch but with different environmental parameter values. We then analyze the affects that these parameters and polarization have on our location system. A method based on semi-automated trail and error is proposed as a better method for selecting the environmental parameters. Using experimental data we show that if we adjust the model parameters to account for polarization angle then we can increase location accuracy. Adjusting parameters for polarization is fairly trivial to implement when the polarization angle is known. A practical solution for determining the polarization angle is with an accelerometer. The addition of an accelerometer could also be used to increase the battery life of the node

    M3 - Conference contribution

    SN - 9788955191387

    VL - 3

    SP - 260

    EP - 265

    BT - The 11th International Conference on Advanced Communication Technology

    A2 - Lee, Hyeong-Ho

    PB - IEEE, Institute of Electrical and Electronics Engineers

    CY - Korea

    ER -

    Barralet M, Huang X, Sharma D. Effects on Antenna Polarization on RSSI Based Location Identification. In Lee H-H, editor, The 11th International Conference on Advanced Communication Technology: Ubiquitous ICT Convergence Makes Life Better!. Vol. 3. Korea: IEEE, Institute of Electrical and Electronics Engineers. 2009. p. 260-265